This collection of 13 new essays shows what Baruch Spinoza can add to our understanding of the relational nature of autonomy. By offering a relational understanding of the nature of individuals centred on the role played by emotions, Spinoza offers not only historical roots for contemporary debates but also broadens the current discussion. At the same time, reading Spinoza as a theorist of relational autonomy underscores the consistency of his overall metaphysical, ethical and political project, which has been clouded by the standard rationalist interpretation of his works.